Excellent! Really, anything to propel Nix(OS) or Guix(SD) forward gets a huge thumbs up in my book. Nix is one of those things that I explain and then have people telling me I'm wrong and/or an idiot because they can't believe that you can have a distribution based on building packages from source, backed by a binary cache. If you think Snappy or Flatpak/Xdg-App are cool, you owe it to yourself to look at Nix/Guix, which provide a superset of the features provided by Snappy. And then some.

NixOS + NixOps means I can have a single declarative file that describes the state of my cloud VMs, cloud load balancer, cloud Traffic Manager... plus the exact software on the VMs (all the way down to the exact checkout of gcc used to compile everything and the nginx configurations)... literally everything is snapshotted and revertable.

If it weren't for a systemd-related bug, I'd have a one-command way of getting a Kubernetes cluster booted in Azure via NixOS, where upgrading a cluster would simply require editting a single file and re-running the nixops tool.

I wish more people knew about NixOS. You know how everyone writes pie-in-the-sky blogposts about the "next-gen" Node.JS package manager? Yeah, well, Nix already packages NodeJS libraries/apps, plus Rust libraries/apps, plus Go libraries/apps, plus Python libraries/apps, etc, etc.